When an overnight sleeper train from Glasgow to London is hacked using a mysterious device, 12 passengers, including off-duty policeman Joe Roag, are trapped on board. Hurtling towards destruction and with all CCTV and communications cut, Joe manages to make contact with cyber security director Abby Aysgarth via satellite phone. Joe and Abby must find a way to stop the train, save its passengers and identify the mysterious ‘Driver’ who has infiltrated the rail system.

Yet Joe and Abby will both find themselves under suspicion, as the security services outside, as well as the other passengers on board, uncover secrets from our protagonists’ pasts.

Combining classic mystery, high-velocity action and breath-taking twists, this real-time thriller will have viewers on the edge of their seats as the runaway sleeper speeds towards its final destination…